Caption: Paramecium conjugating. Light microscope footage of two ciliate protozoa (Paramecium caudatum) conjugating. Conjugation is a form of sexual reproduction where two similar cells fuse and exchange genetic information. Paramecium are abundant in water and soil. They move by the rhythmic beating of many hair-like cilia, and feed mainly on bacteria. Magnification: x250 at 10 centimetres wide.